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Bent rear triangle: repairable?
I'm not sure if that's the correct term but is it repairable? My guess is, with enough strength I can straighten it out but would it be safe? It's part of a Peugeot PGN with Reynolds 501 frame. https://cimg2.ibsrv.net/gimg/bikefor...50945442d6.jpg |
That's a rather sharp bend,
Is that a crease on the outboard side? Creases are very very bad. |
Originally Posted by Wildwood
(Post 20577221)
That's a rather sharp bend,
Is that a crease on the outboard side? Creases are very very bad. |
To the OP, check the link above.
Answer: yes, I think it can be fixed. |
Originally Posted by gugie
(Post 20577423)
To the OP, check the link above.
Answer: yes, I think it can be fixed. |
https://cimg6.ibsrv.net/gimg/bikefor...77c9dc98e3.jpg He's not sure if the wheels can be trued https://cimg5.ibsrv.net/gimg/bikefor...da7d34b1a4.jpg I think I can replace this with a shimano un55 bottom bracket? If the accident didn't jam this in somehow. Also he has the crank but not sure if it's usable https://cimg4.ibsrv.net/gimg/bikefor...befbac446c.jpg Didn't see this pic until recently and it's making me very hesitant. $20-30 for the whole bike might be worth it |
https://cimg1.ibsrv.net/gimg/bikefor...9a107d261b.jpg
That looks a lot like my dead Bianchi. I was told it wasn't worth repairing. Hope you do better with yours. https://cimg4.ibsrv.net/gimg/bikefor...dd6a45a902.jpg |
One picture never tells the whole story. And I have some experiences with out-of-align framesets, over many years. |
Originally Posted by Mr_Asifi
(Post 20577769)
https://cimg5.ibsrv.net/gimg/bikefor...da7d34b1a4.jpg
I think I can replace this with a shimano un55 bottom bracket? If the accident didn't jam this in somehow. Also he has the crank but not sure if it's usable Is the left crank with the bike, and in good shape? The front and rear wheels already don't match. So, if they can't be trued, you might as well just replace them both with either newer, or vintage parts. Hard to say what damaged stuff is worth, I suppose it depends on the buyer, but the components (fork (if true), seatpost, shifters, etc), are probably worth at least $20 or $30. Ummm, you're missing half the seatpost, scratch that, but the brakes also have some value. Hubs if the wheels are bad? |
Neither bike is that bad condition. I enlarged the 1st picture of the PGN and didn't see any kinking or creasing.
Both [MENTION=381793]gugie[/MENTION] and I have straightened frames in much worse condition. The Peugeot PGN is made of Reynolds 501 which is 4130 chrome moly steel and will take a lot of cold working. To be hit hard enough to break off the NDS crank spindle and have that little frame damage speaks to the strength of the tubing. The whole frame probably needs realignment. I'd be more concerned that the wheels are toast. verktyg :50: |
Doable repair on both (provided they're not heat treated; the Peugeot, as noted above, isn't). Have fixed one road frame with a similar dent in the past; can't remember it though. Also did a '51 Raleigh, but the '51 isn't really representative of these.
It'd be wise to check the joints for cracks afterwards, but it's likely that both can be cold-set back into alignment with a Park frame straightener with minimal damage to the paint too. -Kurt |
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